need real reforms for a real recovery and that's exactly what mitt romney and i are proposing. >> reporter: after several heated exchanges ryan insinuated that president obama's performance last week was motivating the vice president's -- >> i know you're under a lot of duress for making up for a loss round. >> reporter: who won? it depends who you ask. polls are mixed. in a cbs news poll of uncommitted voters, 50% thought the vice president run, 31% sided for ryan and 19% called it a tie. 56% thought biden would be an effective president if necessary compared with 49% for ryan. not surprisingly, both sides claimed victory. mitt romney's campaign said biden seemed off balance and strange. the president's team said the debate exposed the risks of electing a romney/ryan ticket. the next presidential debate is tuesday. randall pinkston, cbs news, danville, kentucky. >>> as for the men at the top of the ticket, president obama will remain in washington today to prepare for his next debate next week and mitt romney will be campaigning in the battleground states of ohio and virgini